KR100357560B1 - Pully shaft support for continuously variable transmission - Google Patents

Pully shaft support for continuously variable transmission Download PDF

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Publication number
KR100357560B1
KR100357560B1 KR1019990066559A KR19990066559A KR100357560B1 KR 100357560 B1 KR100357560 B1 KR 100357560B1 KR 1019990066559 A KR1019990066559 A KR 1019990066559A KR 19990066559 A KR19990066559 A KR 19990066559A KR 100357560 B1 KR100357560 B1 KR 100357560B1
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South Korea
Prior art keywords
pulley
pulley shaft
continuously variable
shaft support
variable transmission
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KR1019990066559A
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Korean (ko)
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KR20010059169A (en
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이용준
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현대자동차주식회사
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/52—Pulleys or friction discs of adjustable construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/0018—Shaft assemblies for gearings
    • F16H57/0025—Shaft assemblies for gearings with gearing elements rigidly connected to a shaft, e.g. securing gears or pulleys by specially adapted splines, keys or methods

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmissions By Endless Flexible Members (AREA)

Abstract

전장을 줄여 탑재성을 높이고, 중량 감소로 소형 경량화에 기여할 수 있는 무단 변속기의 풀리축 지지 구조를 제공할 목적으로;To provide a pulley shaft support structure of a continuously variable transmission that can reduce the overall length, increase the mountability, and contribute to the compact and lightweight by reducing the weight;

풀리축상에 고정측 풀리가 일체로 형성되고, 그 일측으로 가변측 풀리가 축방향 이동이 가능하도록 배치되며, 상기 가변측 풀리측에는 케이싱 부재가 설치되어 이들 사이에 유압 쳄버가 형성되고, 상기 케이싱 부재의 후측에는 스페이서를 두고 구름부재인 베어링을 통해 변속기 하우징에 지지되는 풀리축 지지 구조에 있어서,A fixed side pulley is integrally formed on the pulley shaft, and a variable side pulley is disposed to allow axial movement to one side thereof, and a casing member is provided on the variable side pulley side to form a hydraulic chamber therebetween, and the casing member In the pulley shaft support structure which is supported on the transmission housing through a bearing which is a rolling member with a spacer on the rear side of the

상기 구름부재를 록킹부재의 외주측에 일체로 형성하고, 상기 록킹부재를 풀리축에 체결하여 이루어지는 무단 변속기의 풀리축 지지 구조를 제공한다Provides a pulley shaft support structure of the continuously variable transmission formed by integrally forming the rolling member on the outer peripheral side of the locking member, and fastening the locking member to the pulley shaft.

Description

무단 변속기의 풀리 축 지지 구조{PULLY SHAFT SUPPORT FOR CONTINUOUSLY VARIABLE TRANSMISSION}Pulley shaft support structure of continuously variable transmission {PULLY SHAFT SUPPORT FOR CONTINUOUSLY VARIABLE TRANSMISSION}

본 발명은 차량용 무단 변속기의 풀리축 지지 구조에 관한 것으로서, 보다 상세하게는 구동축 길이가 증대됨이 없이 구동풀리의 추력을 효과적으로 대응할 수 있도록 구동축을 지지하는 구동축 지지 구조에 관한 것이다.The present invention relates to a pulley shaft support structure of a continuously variable transmission for a vehicle, and more particularly, to a drive shaft support structure for supporting the drive shaft to effectively cope with the thrust of the drive pulley without increasing the drive shaft length.

예컨대, 차량의 변속기에는 엔진의 회전력을 구동륜에 전달하는 기능을 갖고 있는데, 이러한 변속기에는 운전자의 의지대로 운전자가 직접 변속단을 선택하는 수동 변속기와, 차량의 주행 조건에 따라 자동적으로 변속이 이루어지는 자동 변속기와, 각 변속단 사이에 특정한 변속 영역이 없이 무단으로 연속적인 변속이 이루어지는 무단 변속기로 대별된다.For example, the transmission of the vehicle has a function of transmitting the rotational force of the engine to the drive wheels, and such a transmission includes a manual transmission in which the driver directly selects a shift stage at the driver's will, and automatic transmission in which the shift is automatically performed according to the driving conditions of the vehicle. It is roughly classified into a transmission and a continuously variable transmission in which continuously shifting is performed without a specific shift range between each shift stage.

상기와 같은 변속기에 있어서, 본 발명은 유압을 이용하는 자동 변속기의 단점을 보완하여 연비 및 동력 전달 성능, 그리고 중량면에서 큰 장점을 갖는 무단 변속기에 관계하며, 이의 무단 변속기는 입력축과 출력축에 장착되는 풀리의 직경변위를 이용하는 방식이 주로 사용되고 있다.In the transmission as described above, the present invention relates to a continuously variable transmission having a great advantage in terms of fuel economy, power transmission performance, and weight by supplementing the disadvantages of the automatic transmission using hydraulic pressure, the continuously variable transmission thereof is mounted on the input shaft and the output shaft The method using the diameter displacement of a pulley is mainly used.

이러한 무단 변속기에 있어서, 구동 및 피동축 풀리는 고정측 풀리와 이동측 풀리로 이루어져 가변측 풀리의 후측에 형성된 유압쳄버실에 작용하는 유압에 의해 구동 토크에 알맞은 수준으로 가변측 풀리가 금속벨트 측면에 추력을 가하게 되며, 이들 풀리의 직경 변환에 따라 무단 변속이 이루어지게 되는 것이다.In such a continuously variable transmission, the driving and driven shaft pulleys consist of the fixed side pulley and the moving side pulley, and the variable side pulley is provided on the side of the metal belt at a level suitable for the driving torque by the hydraulic pressure acting on the hydraulic chamber chamber formed on the rear side of the variable side pulley. Thrust is applied, and the speed change is made according to the diameter change of these pulleys.

상기의 점을 감안하여 종래 구동 풀리의 구성을 살펴보면, 도 4에서와 같이, 풀리축(100)상에 고정측 풀리(102)가 일체로 형성되고, 그 일측으로 가변측 풀리(104)가 축방향 이동이 가능하도록 배치되며, 상기 가변측 풀리(104)측에는 케이싱 부재(106)가 설치되어 이들 사이에 유압 쳄버(108)를 형성하고 있으며, 이 유압 쳄버(108)는 풀리축(100)에 형성된 유로(110)를 통하여 엔진의 구동력에 의해 생성되는 압력 유체가 공급될 수 있도록 구성되어 있다.Considering the above point, in the configuration of the conventional driving pulley, as shown in FIG. 4, the fixed side pulley 102 is integrally formed on the pulley shaft 100, and the variable side pulley 104 is formed on one side thereof. It is arranged to move in a direction, the casing member 106 is provided on the variable side pulley 104 side to form a hydraulic chamber 108 therebetween, the hydraulic chamber 108 is attached to the pulley shaft 100. The pressure fluid generated by the driving force of the engine is configured to be supplied through the formed flow path 110.

그리고 엔진 구동 토크를 벨트 미끄러짐 없이 원활하게 벨트(112)와 풀리(102)(104)의 금속 마찰력에 의하여 동력이 전달되려면 유압 쳄버(108)의 고압에 의한 큰 추력(대략 8,000kgf)으로 벨트(112)를 풀리(102)(104) 사이에 클램핑시켜야 하며, 유압의 반작용 힘을 풀리축(100)상에 지지시키는 수단을 필수적으로 갖추어야 한다.In addition, the engine driving torque can be smoothly transmitted without the belt slipping by the metal friction force of the belt 112 and the pulleys 102 and 104, so that the belt is driven by a large thrust (approximately 8,000 kgf) by the high pressure of the hydraulic chamber 108. 112 must be clamped between pulleys 102 and 104 and must be provided with means for supporting hydraulic reaction forces on pulley shaft 100.

이에 따라 종래에는 케이싱 부재(106)의 후측에 스페이서(114)를 두고 구름부재(116)인 베어링을 통해 변속기 하우징(118)에 구동축(100)을 지지하고, 그 선단에 숫나사부(120)를 형성하고 이에 록킹 너트(122)를 체결하는 수단으로 풀리축(100)를 지지하는 것이 일반적이다.Accordingly, the drive shaft 100 is conventionally supported on the transmission housing 118 through a bearing, which is a rolling member 116, with the spacer 114 at the rear side of the casing member 106, and the male screw portion 120 at the tip thereof. It is common to support the pulley shaft 100 by means of forming and fastening the locking nut 122 thereto.

그러나 상기와 같은 록킹 너트는 추력에 대응하기 위해서는 록킹 너트의 전단응력을 고려하여 적어도 15MM 이상의 나사부 두께를 확보하여야만 하는데, 이 경우 구동축상에서 전장이 증대되면서 부피가 커지게 되어 이에 따른 중량 과다 및 탑재성이 불리하다는 문제점을 내포하고 있다.However, in order to cope with thrust, the above-mentioned locking nut must secure a thread thickness of at least 15MM in consideration of the shear stress of the locking nut. In this case, as the overall length increases on the drive shaft, the volume becomes large, resulting in overweight and mountability. This disadvantage has a problem.

따라서 본 발명은 상기와 같은 문제점을 해결하기 위하여 발명된 것으로서, 본 발명의 목적은 전장을 줄여 탑재성을 높이고, 중량 감소로 소형 경량화에 기여할 수 있는 무단 변속기의 풀리축 지지 구조를 제공함에 있다.Therefore, the present invention has been invented to solve the above problems, and an object of the present invention is to provide a pulley shaft support structure of a continuously variable transmission that can contribute to compactness and light weight by reducing the overall length and weight reduction.

도 1은 본 발명에 의한 제1 실시예의 단면도.1 is a sectional view of a first embodiment according to the present invention;

도 2는 본 발명에 의한 제2 실시예의 단면도.2 is a sectional view of a second embodiment according to the present invention;

도 3은 본 발명에 의한 제3 실시예의 단면도.3 is a sectional view of a third embodiment according to the present invention;

도 4는 종래 설명을 위한 도면이다.4 is a view for explaining the prior art.

이를 실현하기 위하여 본 발명은, 풀리축상에 고정측 풀리가 일체로 형성되고, 그 일측으로 가변측 풀리가 축방향 이동이 가능하도록 배치되며, 상기 가변측 풀리측에는 케이싱 부재가 설치되어 이들 사이에 유압 쳄버가 형성되고, 상기 케이싱 부재의 후측에는 스페이서를 두고 구름부재인 베어링을 통해 변속기 하우징에 지지되는 풀리축 지지 구조에 있어서,In order to achieve this, the present invention, the fixed side pulley is integrally formed on the pulley shaft, the variable side pulley is arranged to enable the axial movement to one side, the casing member is provided on the variable side pulley side, In the pulley shaft support structure is formed in the chamber, the rear side of the casing member is supported by the transmission housing through a bearing which is a rolling member with a spacer,

상기 구름부재를 록킹부재의 외주측에 일체로 형성하고 상기 록킹부재를 풀리축에 체결하여 이루어지는 무단 변속기의 풀리축 지지 구조를 제공한다.It provides a pulley shaft support structure of the continuously variable transmission formed by integrally forming the rolling member on the outer peripheral side of the locking member and fastening the locking member to the pulley shaft.

이하, 본 발명의 바람직한 실시예를 첨부한 도면에 의거하여 상세히 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

도 1은 본 발명의 제1 실시예를 도시한 것으로서, 부호 2는 풀리를 총칭한다.Fig. 1 shows a first embodiment of the present invention, in which 2 denotes a pulley.

상기 풀리(2)는 풀리축(4)상에 고정측 풀리(6)가 일체로 형성되고, 그 일측으로 가변측 풀리(8)가 축방향 이동이 가능하도록 배치되며, 상기 가변측 풀리(8)측에는 케이싱 부재(10)가 설치되어 이들 사이에 유압 쳄버(12)를 형성하고 있으며, 이 유압 쳄버(12)는 풀리축(4)에 형성된 유로(14)를 통하여 엔진의 구동력에 의해 생성되는 압력 유체가 공급될 수 있도록 구성되어 있다.The pulley 2 has a fixed side pulley 6 integrally formed on the pulley shaft 4, and the variable side pulley 8 is disposed at one side thereof to allow axial movement, and the variable side pulley 8 The casing member 10 is provided at the side of the valve to form a hydraulic chamber 12 therebetween. The hydraulic chamber 12 is generated by the driving force of the engine through a flow path 14 formed on the pulley shaft 4. It is configured to supply pressure fluid.

그리고 상기 케이싱 부재(10)의 후측에는 스페이서(16)를 두고 구름부재(18)인 베어링을 통해 변속기 하우징(20)에 지지되고, 상기 구름부재(18)는 록킹부재에 의하여 풀리축(4)에 체결 고정되는데, 본 발명의 제1 실시예에서는 상기 풀리축(4)에 암나사부(22)를 형성하고 이에 록킹부재인 록킹볼트(24)를 체결하는 수단으로 구름부재(18)를 지지토록 하였다.In addition, the rear side of the casing member 10 is supported by the transmission housing 20 through a bearing which is a rolling member 18 with a spacer 16, and the rolling member 18 is pulley shaft 4 by a locking member. In the first embodiment of the present invention, the female threaded portion 22 is formed on the pulley shaft 4 and the rolling member 18 is supported by means of fastening the locking bolt 24, which is a locking member. It was.

이에 따라 록킹 볼트(24)는 도면에서와 같이 벨트 클램핑 포오스의 반 작용력 Ft를 지지하여 주게 되는데, 이 반 작용력이 증가하면 이에 따른 록킹 볼트(24)의 숫나사부(26) 길이 및 그 외경을 증대시키면 볼트 머리(28) 두께를 얇게 하면서도 그 전단응력을 충분히 수용할 수 있게 되는 바, 무단 변속기의 전장은 증대시킬 필요가 없어진다.Accordingly, the locking bolt 24 supports the reaction force Ft of the belt clamping force as shown in the drawing. When the reaction force increases, the male thread portion 26 length and the outer diameter of the locking bolt 24 accordingly are increased. Increasing the thickness of the bolt head 28 allows the shear stress to be sufficiently accommodated, so that the overall length of the continuously variable transmission does not need to be increased.

그리고 도 2는 본 발명에 의한 제2 실시예를 도시한 것으로서, 상기 제1 실시예에서와 같이, 풀리축(4) 선단 내경부에 암나사부를 형성하고, 이에 록킹볼트(24)로 이루어지는 록킹부재의 볼트 머리(28)의 외주측에 구름부재(18)를 일체로 형성하여 상호 체결한 것으로 그 작용 효과는 제 1 실시예와 동일하다.FIG. 2 shows a second embodiment according to the present invention. As in the first embodiment, a female screw portion is formed in the inner diameter portion of the distal end of the pulley shaft 4, and the locking member is formed of a locking bolt 24. The rolling member 18 is integrally formed on the outer circumferential side of the bolt head 28 to be mutually fastened, and the effect thereof is the same as that of the first embodiment.

도 3은 본 발명에 의한 제3 실시예를 도시한 것으로서, 이는 제1,2 실시예와는 달리 풀리축(4) 선단에 숫나사부(30)를 형성하고, 이에 록킹 너트(32)로 이루어지는 록킹부재의 외주 내측에 구름부재(18)를 일체로 형성하여 상호 결합한 것이다.3 shows a third embodiment according to the present invention, which, unlike the first and second embodiments, forms a male thread portion 30 at the tip of the pulley shaft 4, and includes a locking nut 32. The rolling member 18 is integrally formed inside the outer circumference of the locking member to be coupled to each other.

이는 종래에는 구름부재(18)를 먼저 풀리축(4)에 지지시킨 상태에서 그 선단부로 록킹 너트를 체결하고 있는 것에 비하여, 상기 제 3 실시예에서는 구름부재(18)가 록킹 부재인 록킹너트(32)의 외주측에 일체로 형성되는 바, 나사부 길이가 그만큼 증대되어 과다한 반작용력 Ft에 따른 전단 응력이 가해지더라도 나사부의 길이 증대없이 이를 충분히 수용할 수 있기 때문에 무단 변속기의 전장은 증대되지 않는다.This is conventionally compared with the locking nut being fastened to the distal end of the rolling member 18 with the pulley shaft 4 first supported. In the third embodiment, the locking nut 18 is the locking nut (the locking member). It is formed integrally on the outer circumferential side of 32), and the length of the threaded portion is increased so much that even if a shear stress is applied due to excessive reaction force Ft, the full length of the continuously variable transmission is not increased because the threaded portion can be sufficiently accommodated without increasing the threaded portion.

이상에서와 같이 본 발명에 의하면, 풀리축의 증대 없이도 풀리측에서 가해지는 반 작용력을 충분히 수용하면서도, 록킹부재와 구름부재의 일체화로 점유 면적으로 오히려 축소시킬 수 있게 되는 바, 무단 변속기의 전장을 줄여 탑재성을 높이고, 중량 감소로 인한 무단 변속기의 소형 경량화에 기여할 수 있는 발명인 것이다.As described above, according to the present invention, while fully accommodating the reaction force exerted on the pulley side without increasing the pulley shaft, the lock area and the rolling member can be reduced to reduce the occupied area, thereby reducing the overall length of the continuously variable transmission. It is an invention that can increase the mountability and contribute to the compact and light weight of the continuously variable transmission due to weight reduction.

Claims (3)

풀리축상에 고정측 풀리가 일체로 형성되고, 그 일측으로 가변측 풀리가 축방향 이동이 가능하도록 배치되며, 상기 가변측 풀리측에는 케이싱 부재가 설치되어 이들 사이에 유압 쳄버가 형성되고, 상기 케이싱 부재의 후측에는 스페이서를 두고 구름부재인 베어링을 통해 변속기 하우징에 지지되는 풀리축 지지 구조에 있어서,A fixed side pulley is integrally formed on the pulley shaft, and a variable side pulley is disposed to allow axial movement to one side thereof, and a casing member is provided on the variable side pulley side to form a hydraulic chamber therebetween, and the casing member In the pulley shaft support structure which is supported on the transmission housing through a bearing which is a rolling member with a spacer on the rear side of the 상기 구름부재를 록킹부재의 외주측에 일체로 형성하여, 상기 록킹부재를 풀리축에 체결하여 이루어짐을 특징으로 하는 무단 변속기의 풀리축 지지 구조.Pulley shaft support structure of a continuously variable transmission, characterized in that the rolling member integrally formed on the outer peripheral side of the locking member, the locking member is fastened to the pulley shaft. 청구항 1에 있어서, 록킹부재는 록킹볼트로 형성하고, 풀리축에는 암나사부를 형성하여 상호 체결함을 특징으로 하는 무단 변속기의 풀리축 지지 구조.The pulley shaft support structure of a continuously variable transmission according to claim 1, wherein the locking member is formed of a locking bolt, and the pulley shaft has a female screw portion to be fastened to each other. 청구항 1에 있어서, 록킹부재는 록킹너트로 형성하고, 풀리축 선단 외주연에는 숫나사부를 형성하여 상호 체결함을 특징으로 하는 무단 변속기의 풀리축 지지 구조.The pulley shaft supporting structure of a continuously variable transmission according to claim 1, wherein the locking member is formed of a locking nut, and a male screw portion is formed on the outer periphery of the pulley shaft front end and engaged with each other.
KR1019990066559A 1999-12-30 1999-12-30 Pully shaft support for continuously variable transmission KR100357560B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04194438A (en) * 1990-11-27 1992-07-14 Aisin Seiki Co Ltd Variable speed pulley device
JPH06221395A (en) * 1993-01-27 1994-08-09 Aichi Mach Ind Co Ltd Groove vatiable pulley of continuously variable transmission
JPH07158707A (en) * 1993-12-08 1995-06-20 Kubota Corp Belt-type continuously variable transmission
JPH10213198A (en) * 1997-01-31 1998-08-11 Kubota Corp Pulley mounting part structure of belt type continuously variable transmission

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04194438A (en) * 1990-11-27 1992-07-14 Aisin Seiki Co Ltd Variable speed pulley device
JPH06221395A (en) * 1993-01-27 1994-08-09 Aichi Mach Ind Co Ltd Groove vatiable pulley of continuously variable transmission
JPH07158707A (en) * 1993-12-08 1995-06-20 Kubota Corp Belt-type continuously variable transmission
JPH10213198A (en) * 1997-01-31 1998-08-11 Kubota Corp Pulley mounting part structure of belt type continuously variable transmission

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